Error in 9.6.510 update file

I am trying to install the Mindmanager 9 Build 9.6.510 and am getting this error message. The Finder can’t complete the operation because some data in “MindManager Tipps und Tricks.mmap” can’t be read or written.(Error code -36). I tried to repeat the download in case it got corrupted, but this made no difference. Any ideas?